USB Optical Mouse Problems

Starting about last night, my USB Optical Mouse would start freezing for 1-2 seconds randomly. The time increased and eventually it didn't work at all. I put it in another port and it worked fine, and t hen the same thing happened. Eventually I tried all 4 ports at the back and they stopped working on them, however it was working at the first port again for awhile.

However, it is working fine at the front ports; and I am having no problems currently.

I know I should buy a PS/2 mouse, but I would still like to know the problem. Any help?